全文获取类型
收费全文 | 189篇 |
免费 | 8篇 |
出版年
2020年 | 4篇 |
2019年 | 2篇 |
2018年 | 4篇 |
2017年 | 2篇 |
2016年 | 6篇 |
2015年 | 8篇 |
2014年 | 2篇 |
2013年 | 21篇 |
2012年 | 6篇 |
2011年 | 8篇 |
2010年 | 2篇 |
2009年 | 7篇 |
2008年 | 6篇 |
2007年 | 12篇 |
2006年 | 8篇 |
2005年 | 10篇 |
2004年 | 8篇 |
2003年 | 11篇 |
2002年 | 10篇 |
2001年 | 7篇 |
2000年 | 1篇 |
1999年 | 5篇 |
1998年 | 4篇 |
1997年 | 5篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1971年 | 2篇 |
1969年 | 1篇 |
1967年 | 1篇 |
1966年 | 4篇 |
排序方式: 共有197条查询结果,搜索用时 15 毫秒
111.
The above article (DOI: 10.1002/bin.271 ) was published online in Early View on 3 December 2008. A printing error was subsequently identified in the article. Page 1: Incorrect author affiliation. ‘Keio Advanced Research Center (KARC)’ should be ‘Department of Psychology’ 相似文献
112.
113.
The present study addressed the effect of loudness and tempo on kinematics and muscular activities of the upper extremity during repetitive piano keystrokes. Eighteen pianists with professional music education struck two keys simultaneously and repetitively with a combination of four loudness levels and four tempi. The results demonstrated a significant interaction effect of loudness and tempo on peak angular velocity for the shoulder, elbow, wrist and finger joints, mean muscular activity for the corresponding flexors and extensors, and their co-activation level. The interaction effect indicated greater increases with tempo when eliciting louder tones for all joints and muscles except for the elbow velocity showing a greater decrease with tempo. Multiple-regression analysis and K-means clustering further revealed that 18 pianists were categorized into three clusters with different interaction effects on joint kinematics. These clusters were characterized by either an elbow-velocity decrease and a finger-velocity increase, a finger-velocity decrease with increases in shoulder and wrist velocities, or a large elbow-velocity decrease with a shoulder-velocity increase when increasing both loudness and tempo. Furthermore, the muscular load considerably differed across the clusters. These findings provide information to determine muscles with the greatest potential risk of playing-related disorders based on movement characteristics of individual pianists. 相似文献
114.
Previous studies have reported that longer stimulus presentation decreases the magnitude of priming. In the present study, we used meaningless kaleidoscope images, which were reported to minimize conceptual processing, to investigate the mechanism of the phenomenon. We assessed the impact of stimulus duration on perceptual priming (Experiment 1) and implicit recognition memory (Experiment 2). Both the magnitude of priming and the accuracy of implicit recognition were lower with the longer stimulus presentation (350 ms) compared with the shorter presentation (250 ms). This coincidence of temporal dynamics between priming and implicit recognition suggests similar underlying memory mechanisms. In both cases, the decrease of performance with longer presentation can be explained by either changes in perceptual processes or interference from explicit memory retrieval. 相似文献
115.
116.
Tadao Watanabe Ken-Ichi Arai Kyosuke Yoshimi Hiroshi Oikawa 《Philosophical Magazine Letters》2013,93(2):47-52
Abstract The type and frequency of grain boundaries, the so-called grain boundary character distribution (GBCD), has been determined in rapidly solidified and subsequently annealed Fe-6·5 mass% Si alloy ribbon by the scanning electron microscopy-electron channelling pattern (SEM-ECP) technique. High frequencies of low-angle boundaries and coincidence boundaries with Σ3, Σ9, Σ11, Σ17 and Σ19 were observed in a fully annealed ribbon with well defined {110} texture. The total frequency of low-angle boundaries and coincidence boundaries is almost one-half of all grain boundaries. The coincidence boundaries which occurred more frequently are exactly those predicted theoretically from the coincidence orientations for 〈110〉 rotation in cubic crystals, similar to those observed previously in {100} textured ribbons of the same alloy produced by the same processing method. The presence of a close relationship between the type of texture and GBCD has been confirmed by experiment on differently textured ribbons of the same material. 相似文献
117.
Based on a circumplex model of facial affect, four inner affective circumplexes, assumed to have 100%, 75%, 50%, and 25% emotional intensities, were investigated in terms of fractal, which is a concept of complex systems. Results revealed that the perimeters of the circumplex excluding the 25% condition possessed fractal property characterised by features specific to fractals. Results also showed that fractal dimension in the 50% condition (1.58 dimension) was significantly higher than that in the 100% (1.45 dimension) and 75% (1.45 dimension) conditions, indicating that the cognitive structure of facial affect in the 50% condition was more complex than that in the 100% and 75% conditions. 相似文献
118.
This study examined the size of the useful visual field in patients (9 men, 6 women) with schizophrenia. A choice reaction task was conducted, and performances at 2.5, 5, 7, 10, and 25 degrees in both visual fields were measured. Three key findings were shown. First, patients had slower choice reaction times (choice RTs) than normal controls. Second, patients had slower choice RTs in the right visual field than in the left visual field. Third, patients and normal controls showed the same U-shaped choice RT pattern. The first and second findings were consistent with those of other studies. The third finding was a clear indication of the patients' performance in peripheral vision, and a comparison with normal controls suggested that there was no difference in the size of the useful visual field, at least within 相似文献
119.
In the behavioral and social sciences, quasi-experimental and observational studies are used due to the difficulty achieving
a random assignment. However, the estimation of differences between groups in observational studies frequently suffers from
bias due to differences in the distributions of covariates. To estimate average treatment effects when the treatment variable
is binary, Rosenbaum and Rubin (1983a) proposed adjustment methods for pretreatment variables using the propensity score.
However, these studies were interested only in estimating the average causal effect and/or marginal means. In the behavioral
and social sciences, a general estimation method is required to estimate parameters in multiple group structural equation
modeling where the differences of covariates are adjusted.
We show that a Horvitz–Thompson-type estimator, propensity score weighted M estimator (PWME) is consistent, even when we use estimated propensity scores, and the asymptotic variance of the PWME is shown to be
less than that with true propensity scores.
Furthermore, we show that the asymptotic distribution of the propensity score weighted statistic under a null hypothesis is
a weighted sum of independent χ2
1 variables.
We show the method can compare latent variable means with covariates adjusted using propensity scores, which was not feasible
by previous methods. We also apply the proposed method for correlated longitudinal binary responses with informative dropout
using data from the Longitudinal Study of Aging (LSOA). The results of a simulation study indicate that the proposed estimation
method is more robust than the maximum likelihood (ML) estimation method, in that PWME does not require the knowledge of the
relationships among dependent variables and covariates. 相似文献
120.
In Section 1, a conceptual framework within which to study learned helplessness (LH), learned irrelevance (LI) and the related
phenomena is introduced. In Section 2, three rat experiments on LI conducted in our laboratory using a conditioned suppression
of licking preparation are introduced. In Experiment 1, the phenomena of LI and general LI were confirmed. In Experiment 2,
random presentations of CSt/US were found to interfere with subsequent initial excitatory conditioning to CSl under random CSl/US presentations. In Experiment 3, pre-paired presentations of CSn or CSt with US before random CSt/US presentations was found to have an attenuating effect on the development of general LI. 相似文献